METHOD FOR OBTAINING BUTADIENE POLYMERS AND BUTADIENE COPOLYMERS WITH STYRENE

摘要

FIELD: chemistry. ^ SUBSTANCE: invention claims method of obtaining polybutadiene or butadiene copolymers with styrene by polymerisation of respective monomers in hydrocarbon solvent medium in the presence of initiating system, where initiating system is a complex of lithium organic compound and modifying additive obtained by reaction of alkali metal lapramolate and tetrahydrofurfurylic alcohol, metal magnesium and sodium (potassium) at molar ratio of 1 : 2-4 : 1-2 : 0-2 respectively. Polybutadiene and butadiene copolymers with styrene with 1,2-link content in diene part adjustable from 9 to 75 wt %, reduced rate of macromolecules with mass over 106 g/mol (up to 5 wt %), is obtained at temperatures over 60°C. ^ EFFECT: improved method of obtaining polybutadiene or butadiene copolymers with styrene. ^ 5 cl, 5 tbl, 14 ex